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Tag: "transplanted" at biology news

Invasive species alter habitat to their benefit

...previously uninvaded section of marsh. In one, she transplanted live hybrid cattails; in the second she added litter---the mats of dead stems that accumulate around hybrids. A third plot received both live hybrids and litter, and the fourth was left alone. Litter accumulation was the deciding factor, she found...

Failure of 'scout cells' may lead to cancer in transplant patients

...une system is suppressed to prevent rejection of a transplanted organ. The cancer, called post-transplant lymphoproliferative disorder (PTLD), arises only in some transplant patients, but doctors don't know why. This study, led by Ohio State University scientists, begins to answer that question. The find...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...iversity School of Medicine, used a combination of transplanted motor neurons, chemicals capable of overcoming sig...nerve fibers in the spinal cord. The cells were transplanted into eight groups of paralyzed rats. Each group received a different combination of treatments. Some...

UC Davis researchers move biotechnology closer to replacing electronic pacemakers

...onic stem cells, and demonstrated that they can be transplanted into a recipient heart and function normally. Li plans to combine stem cells and protein/cell engineering approaches to the treatment of heart arrhythmias. "Heart cells do not normally regenerate, but we now have the technologies to make new hum...

Stanford doctors advance in bid to turn mice stem cells into blood vessels

...d vessels from stem cells that could eventually be transplanted into living organisms. Starting with embryonic st...to eventually grow whole blood vessels that can be transplanted back into mice. The work is being performed in the laboratory of Christopher Zarins, MD, professor ...

U of MN uses robotic surgery techniques in cardiac cell therapy research

...d in the pig hearts. The cells were successfully transplanted in six of seven cases. Subsequent MRI studies showed that the cells took hold in the heart and function improved. The team used a combination of skeletal myoblasts, or cells that give rise to muscle, and bone-marrow derived cells. Both cell types ...

Discovery may speed forest biotechnology

... trees will behave about the same even if they are transplanted to warmer regions, the scientists say. For applied research, Strauss said, researchers can now induce activation of the FT gene earlier, so that trees will reproduce at much younger ages ?months instead of years - and better lend themselves to conve...

Stem cell transplants improve recovery in animal models for stroke, cerebral palsy

...two weeks. Even though less than 1 percent of the transplanted cells were present two months later, animals receiving treatment developed new neurons, apparently formed from endogenous stem cells. "The mechanism that we are putting forward is these donor cells are secreting nourishing trophic factors that are h...

Mice with glowing hearts shed light on how hearts develop

...rt's ventricles to pump. The researchers have also transplanted cells from the mice with glowing hearts into normal mice to see whether the transplanted cells function normally within the host heart, which could offer insights for heart repair. In the ...

Cyclosporine inhibits hepatitis C virus in vitro

...ial role as primary immunosuppression for patients transplanted for HCV infection and may offer an advantage to Tacrolimus in those patients undergoing IFN-based therapy," the authors report. In addition, they confirm antiviral activity by the drug in cell cultures, having found that, "combination of Cyclosporine...

Australian first to save sight

...orneas were held at low temperatures and had to be transplanted within one week of the donation. Dr Graeme Pollock, Director of the Lions Corneal Donation Service, said no other corneal donation facility in Australia offered this kind of service. "Our ability to store the corneas for longer means reduced surger...

Researchers identify new cord blood stem cell

...d these animals' use of their limbs. Some of the transplanted stem cells developed into "neuron-like" cells that...re typically found in the brain. In addition, the transplanted cells also induced an unanticipated reorganization of host nerve fibers within the brain, which may ...

Findings advance use of adult stem cells for replacement bone

...ody and using them to grow new tissues that can be transplanted back into the patient without risk of rejection. Most tissue engineering approaches involve three components: the harvested adult stem cells, growth factors that cause the stem cells to differentiate into the right kind of tissue cells ?like skin or ...

Scientists discover that widely available drug also helps fight kidney disease

...osuppressant, to help prevent rejection of a new, transplanted kidney. Over 600,000 people in the U.S., and 12 ...ients keep their diseased kidneys in place and the transplanted kidney is an additional, third kidney. So his colleagues, David A. Goldfarb and Andrew Novick, at th...

Stem cell study for patients with heart attack damage seeks to regenerate heart muscle

Rush cardiologists are hoping that transplanted stem cells can regenerate damaged heart muscle in those who experience a first heart attack. The study involves an intravenous infusion of adult mesenchymal stem cells from healthy donor bone marrow that might possibly reverse damage to heart tissue....

UCI researchers discover key factor for survival of human embryonic stem cells

...ate the cells, which we must do before they can be transplanted into patients. It appears that if we treat hES cel...ting disease, undifferentiated stem cells that are transplanted into the body often form tumors instead, causing harm to the patient. A significant challenge has be...

Testes to incubate stem cells

...lusive sperm-producing cells from bull calfs, they transplanted them into mouse testes. Despite the foreign surroundings, the bovine cells survived for long periods, up to three months, although they failed to fully develop into sperm, said de Rooij. "Our plan is to develop a culture system for spermatogonial st...

New research demonstrates bone-marrow derived stem cells can reverse genetic kidney disease

...port patients -- had been removed, the researchers transplanted allogenic bone marrow into the knockout mouse. Ac...igators found that approximately 10 percent of the transplanted cells had incorporated into the damaged regions of the kidney glomeruli in the knockout mouse, emerg...

Cell therapy slows progression of an inherited neurological disease; Improves motor skills in mice

...San Raffaele Scientific Institute in Milan, Italy, transplanted cells that produce myelin into the brains of newborn MLD mice. The researchers found that the transplanted myelin-producing cells survived in the mice brains and successfully moved to regions of the brain wh...

Rice bioengineers pioneer techniques for knee repair

...ive powers to grow replacement tissues that can be transplanted without risk of rejection. Donor cells from the patient are used as a starting place to eliminate rejection risks. Most tissue engineering involves honeycombed plastic templates or hydrogels called scaffolds that are used to guide colonies of donor ...

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